What is the most common type of baffling used in backpacking sleeping bags?

The most common type of baffling used in backpacking sleeping bags is the shingle design. This baffling method consists of horizontal layers of insulation that are arranged in a way that resembles overlapping shingles on a roof. This design effectively minimizes cold spots and allows for better thermal efficiency by preventing the insulation from shifting around. The shingle baffling maintains the integrity of the insulation while promoting even heat distribution, which is crucial in maintaining warmth during outdoor activities.

While other baffling methods like box, cylindrical, and continuous may also be used in some sleeping bags, they are less commonly employed in backpacking models. Box baffling, for instance, creates individual compartments that prevent insulation from shifting but can add weight and bulk, which is not preferable for lightweight backpacking. The cylindrical design is usually found in more specialized or luxury sleeping bags, while continuous baffling can lead to uneven insulation distribution due to the lack of separate compartments. Thus, shingle baffling stands out as the most practical and popular choice among backpackers.